pinniped

The legs were strong and ended in long feet very much like those of a modern pinniped.

它的后肢很强壮，底部有长足，非常像现在的鳍足类动物。

The Australian sea lion is one of the rarest and most endangered pinniped in the world."--David Doubilet

澳大利亚海狮是世界上最稀有也是濒临灭绝的棋类动物之一。

As the killer whales moved in, the plucky pinniped leapt on to the vast ribbed belly of a humpback, and nestled in the animal's armpit.

这头杀人鲸游过来的时候，这只勇敢的鳍足类动物跳上了座头鲸庞大的肋腹部，躲在它的腋窝下。